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It was on, it was answering connections from the ground station via the satellite. How could it been off all flight.
reply to post by tanka418
It doesn't matter that the ocean depth is around 5000 metres in the search area, an ELT transmitting at 406 MHz doesn't have even close to that range in water. A higher frequency is even worse.
This is why they install UABs on the FDRs and CVRs. The 37.5 kHz signal from a UAB has a range of around 2 km in normal conditions, depending on the transmitter signal strength.
This is much greater than an ELT. ELTs are really only useful for crashes on land.
Let this be an example, maybe not great, but an example of all countries working together in time of crisis
reply to post by AnteBellum
The alleged signal is from location -25D 0' 0", +101D 0' 0".
Something that bothers me about this is that there still is no debris.
I mean not one thing. . . luggage, lifeboats, purses, seat covers, etc!
I can only assume that if this is the location, that the jet pulled off a 'Sullenberger' type landing. But even then, wouldn't air pressure crush the jet spilling it contents as it went down to the depths?
I don't get it yet. . .
edit on 4/5/2014 by AnteBellum because: add
You got an authority on this? some kind of reference?
AND, there is yet another issue; in that, necessary equipment had to be sent to the region(?) Really? to detect a signal that virtually ship sonar should be able to detect?
No...sorry man...more lies, or "wishful thinking"...
I'd like to know why it took them a whole month to get ships in there to start the pinging?? Why didn't Malaysia bring in subs and ships from China to begin with? (they are close by and they had a ton of people on that plane) This whole thing has been messed up.
I hope they find the wreckage so everyone can have at least a little bit of comfort in knowing for sure what happened to their family and friends. I feel for the families ....
A aircraft hitting the water at high speed will break up one black box may sink slower then the other and drift a short distance away.
You wouldn't use a ship's sonar to detect that sort of thing. A hydrophone system could, so any decent military ship would have gear that should be able to, our subs could do it easily. But you're not going to get them to do that, because it sort of gives away what and how well they can do. Not only that, since the signal isn't going to be very strong, you might do better with purpose-built designs.